boxheader_manager.h File Reference

#include "openjpeg.h"
#include "byte_manager.h"
#include "box_manager.h"

Go to the source code of this file.

Data Structures
struct	boxheader_param
	box header parameters More...

Typedefs
typedef struct boxheader_param	boxheader_param_t
	box header parameters More...

Functions
boxheader_param_t *	gene_boxheader (int fd, OPJ_OFF_T offset)
	generate a box header at the given offset More...
boxheader_param_t *	gene_childboxheader (box_param_t *superbox, OPJ_OFF_T offset)
	generate a child box header at the given offset More...
void	print_boxheader (boxheader_param_t *boxheader)
	print box header parameters More...

Typedef Documentation

boxheader_param_t

typedef struct boxheader_param boxheader_param_t

box header parameters

Function Documentation

gene_boxheader()

boxheader_param_t* gene_boxheader	(	int	fd,
		OPJ_OFF_T	offset
	)

generate a box header at the given offset

Parameters

[in]	fd	file discriptor of the JP2 file
[in]	offset	Box offset

Returns

pointer to the structure of generate box header parameters

References fetch_4bytebigendian(), fetch_8bytebigendian(), fetch_bytes(), boxheader_param::headlen, boxheader_param::length, boxheader_param::next, and boxheader_param::type.

Referenced by gene_childboxheader().

gene_childboxheader()

boxheader_param_t* gene_childboxheader	(	box_param_t *	superbox,
		OPJ_OFF_T	offset
	)

generate a child box header at the given offset

Parameters

[in]	superbox	super box pointer
[in]	offset	offset from DBox first byte of superbox

Returns

pointer to the structure of generate box header parameters

References box_param::fd, gene_boxheader(), and get_DBoxoff().

Referenced by check_JP2boxidx(), and gene_manfbox().

print_boxheader()

void print_boxheader

(

boxheader_param_t *

boxheader

)

print box header parameters

Parameters

[in]

boxheader

boxheader pointer

References boxheader_param::length, logstream, and boxheader_param::type.

Referenced by print_manfbox().